So, decided to run more tests on the same exact screen and establishments. This time the investigators asked microbiologist from Florida Gulf Coast University, Clifford Renk, to join.

Renk used a different collection method and applied his touch screen swabs to sterile plates right after collection.

"What we're trying to do is just spread them out instead of just one particular area." Renk said.

Within a few days, Renk found lots of bacteria from the touch screens.

The dirtiest location was the touch screen at the convenience store. It had growth of bacteria that Renk said can carry MRSA. Hygienists with Lee Heatlh are not surprised by the second series of results.

"I would consider them very dirty. A touch screen is what we would call a high-touch surface. Cleaning is removing the organic soil, the build up that you can see but its not necessarily killing any organisms that are left on the surfaces." Said Lewis Johnson, an industrial hygienist with Lee Health.

Customers using the locations we tested admit that they know germs are there but don’t often fear using touch screens. Biologists said it takes a bacteria or germ coming in contact with your skin, then eyes or mouth to pick up a virus or infectious disease.

"People touch a surface and then ingest and organism and that causes the infection and that's a lot of what we're worried about." Johnson said.

So if you plan to keep touching, wash up. For your own sake and others.